A relay race is run along a straight line track of length 300.0 m running southt

Question

A relay race is run along a straight line track of length 300.0 m running southto north. The first runner starts at the south end of the track and passes the baton to a teammate at the north end of the track. The second runner races back to the start line and passes the baton to a third runner who races 100.0 m northward to the finish line. The magnitude of the average velocities of the first, second, and third 4unners during their parts of the race are 7.30 m/s, 7.20 m/s, and 7.80 m/s, respectively. What is the average velocity of the baton for the entire race?

Explanation / Answer

(300)/(7.3) + 300/7.2 + 100/7.8 = 95.58 sec Then 700 m / 95.58 sec = 7.32 m/s

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